Today 10bw is learning about FOSSILS. A fossil is a preserved remain of a living organasim or a shell ect. They get formed by death tthen being completely covered in sediment then gets fossilised, this prossess takes millions of years. We made a mindmap and had a look at the fossils from stoke aswell.

Today we are learning about cells, and what makes up a cell. A cell is the smallest part of an organism, which is a living being. A being is either made of a singular cell, like a Chicken Egg or Bacteria, Or it’s multi-cellular like a Mammal. we did an Eggsperiment, putting eggs into hydrochloric

acid to disolve their shells leaving only their cell membrain. we found out that egss are just one big cell.

Today we are learning about how sedimentary rocks are formed and deposited. Mr Riley told us that Mt Cook would have been 20km higher than it is today if it hadn’t been for erosion UNBELIEVABLE :). The rocks are moved by Rivers,Wind and Sea. When they have been moved they are deposited in layers with the oldest at the bottom. We are now doing a table to find out the features and formation of the rocks. Alot of the rocks were formed in a river and a couple were from sand and swamps.

In Sci with Ri today we were studying metamorphic rocks and it really was a great day for it. There were many types of these rocks including slate,Shale,Schist and gneiss. Mr Riley struggled with the tounge twister of schist while some of the class prefering to call it otherwise 🙂 The boys are now completing a table about the names, distinctive features and how the rocks were formed. Finn and sean decuided to do the smell test to work out the name of the rock…..there sense of smell let them down on this occasion……

We examined the microscopic cells of onion epidermis (outer layer), waterweed leaves and cheek cells. The cells looked very small even under microscope at 400x. Our class also looked at the bacteria and fungi in the yoghurt we created last week. Shown in the photos are some of the cells we examined through the microscope.

A volcano is a crack in the earths crust letting molten magma out as lava. volcanos can happen by subduction (one plate gets pushed under another and the magma gets pushed up), spreading (where the plates spread apart) or hot spots (where there is a hot spot where the magma breaks through). Some examples of volcanos in New Zealand are Ruapehu, Ngaruhoe, Tongariro, Taranaki, Taupo, Auckland, White Island and Rotorua. The ash that comes out of a volcano can contain obsidan, pumice and basalt. Lava has silica in it which makes it sticky.